7288681 has 4 divisors (see below), whose sum is σ = 7300864. Its totient is φ = 7276500.

The previous prime is 7288661. The next prime is 7288691. The reversal of 7288681 is 1868827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7288681 - 2⁵ = 7288649 is a prime.

It is a super-2 number, since 2×7288681² = 106249741439522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7288601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5145 + ... + 6406.

It is an arithmetic number, because the mean of its divisors is an integer number (1825216).

Almost surely, 2^7288681 is an apocalyptic number.

It is an amenable number.

7288681 is a deficient number, since it is larger than the sum of its proper divisors (12183).

7288681 is a wasteful number, since it uses less digits than its factorization.

7288681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12182.

The product of its digits is 43008, while the sum is 40.

The square root of 7288681 is about 2699.7557296911. The cubic root of 7288681 is about 193.8874271615.

It can be divided in two parts, 728 and 8681, that added together give a square (9409 = 97²).

The spelling of 7288681 in words is "seven million, two hundred eighty-eight thousand, six hundred eighty-one".